Here is a picture of typical network with FREESCO as Ethernet-to-Ethernet router:

In this configuration the 1st ethernet is used as link to ISP, the rest (ethernets and modems) are used as links to local or remote computers and networks.
Let's have a look what setup procedure will do for us.

711 Hostname of this computer [router]?

For @home users: set the router name to the name provided by @home, f.i. CC25691-A. This is required for @home's DHCP server to give out a lease.